1870-3453 1870-3453 S1870-34532018000100226 10.22201/ib.20078706e.2018.1.2105 Mexico Germany Germany 00 00 2018 00 00 2018 89 1 226 231

2010 12 647-58 2004 64 563-8 2009 142 1050-7 1998 265 2009-14 1996 351 947-75 2009 8 758-65 2003 12 2801-8 2006 37 275-92 1993 21 1427-31 2012 41 95-104 2001 2.9.3.2 2016 7 2001 1 89-92 2008 55 22-7 1992 65 223-30 2004 4 792-4 2008 12 455-9 2012 2 1304-11 1999 8 690-2 R Development Core Team 2012 2006 37 124-43 2008 8 103-6 2000 18 233-4 2006 53 70-9 2015 31 74-9 2004 64 10-5 2000 29 52-4 2016 66 321-8 2004 166 1963-79 2013 111 165-74